Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation

doi:10.1016/j.quascirev.2018.07.040

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation
	Xiong, Zhifang 1,2; Li, Tiegang 1,2; Chang, Fengming 3; Algeo, Thomas J.4,5,6; Clift, Peter D.7,8,9; Bretschneider, Lisa 10; Lu, Zhengyao 11; Zhu, Xiao 3; Frank, Martin 10; Sauer, Peter E.12
刊名	QUATERNARY SCIENCE REVIEWS
	2018-10
卷号	197 页码:288-306
关键词	Chemical weathering Terrigenous input ITCZ ENSO AMOC Western Philippine sea
ISSN号	0277-3791
DOI	10.1016/j.quascirev.2018.07.040
英文摘要	The cause of rapid hydrological changes in the tropical West Pacific during the last deglaciation remains controversial. In order to test whether these changes were triggered by abrupt climate change events in the North Atlantic Ocean, variations in precipitation during the last deglaciation (18-10 ka) were extracted from proxy records of chemical weathering and terrigenous input in the western Philippine Sea (WPS). The evolution of chemical weathering and terrigenous input since 27 ka was reconstructed using the chemical index of alteration (CIA), elemental ratios (K/AI, TOC/TN and Ti/Ca), delta C-13(org), terrigenous fraction abundance and flux data from International Marine Global Change Study Program (IMAGES) core MD06-3054 collected on the upper continental slope of eastern Luzon (northern Philippines). Sediment deposited during the Last Glacial Maximum (LGM) shows weathering equal to or slightly greater than Holocene sediment in the WPS. This unusual state of chemical weathering, which is inconsistent with lower air temperatures and decreased precipitation in Luzon during the LGM, may be due to reworking of poorly consolidated sediments on the eastern Luzon continental shelf during the LGM sea-level lowstand. Rapid changes in chemical weathering, characterized by higher intensity during the Heinrich event 1 (H1) and Younger Dryas (YD) and lower intensity during the Bolling-Allerod (BSA), were linked to rapid variations in precipitation in the WPS during the last deglaciation. The higher terrigenous inputs during the LGM relative to those of the Holocene were controlled by sea-level changes rather than precipitation. The terrigenous inputs show a long-term decline during the last deglaciation, punctuated by brief spikes during the H1 and YD related to sea-level rises and rapid precipitation changes in the WPS, respectively. The proxy records of chemical weathering and terrigenous input from eastern Luzon suggest high rainfall during the H1 and YD events, consistent with inferred rainfall patterns based on Fe/ Ca records from offshore Mindanao. Rapid precipitation changes in the WPS did not coincide with migrations of the Intertropical Convergence Zone (ITCZ) but, rather, were related to state shifts of the El Nifio-Southern Oscillation (ENSO) during the last deglaciation. Based on proxy records and modeling results, we argue that the Atlantic meridional overturning circulation (AMOC) controlled rapid precipitation changes in the tropical West Pacific through zonal shifts of ENSO or meridional migration of the ITCZ during the last deglaciation. Our findings highlight the dominant role of the North Atlantic Ocean in the tropical hydrologic cycle during the last deglaciation. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	National Special Project for Global Change and Air-Sea Interaction[GASI-GEOGE-04]
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000447085200018
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/2806]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China; 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China; 4.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA; 5.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China; 6.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China; 7.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA; 8.Louisiana State Univ, Coastal Studies Inst, Baton Rouge, LA 70803 USA; 9.Nanjing Normal Univ, Sch Geog Sci, Nanjing 210023, Jiangsu, Peoples R China; 10.GEOMAR Helmholtz Ctr Ocean Res Kiel, Wischhofstr 1-3, D-24148 Kiel, Germany;
推荐引用方式 GB/T 7714	Xiong, Zhifang,Li, Tiegang,Chang, Fengming,et al. Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation[J]. QUATERNARY SCIENCE REVIEWS,2018,197:288-306.
APA	Xiong, Zhifang.,Li, Tiegang.,Chang, Fengming.,Algeo, Thomas J..,Clift, Peter D..,...&Huang, Jie.(2018).Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation.QUATERNARY SCIENCE REVIEWS,197,288-306.
MLA	Xiong, Zhifang,et al."Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation".QUATERNARY SCIENCE REVIEWS 197(2018):288-306.